import java.io.File;


public class P13 {
	public static void main(String[] args) {
		String content = Util.getContent(new File("Problem13.txt"), true);
		String[] line = content.split("\\n");
		String sum = "0";
		for (int i = 0 ; i < line.length; i++) {
			sum = Util.sum(sum, line[i]);
		}
		System.out.println(">>> " + sum);
	}
}
